/* ============================================
   Black Friday Deals 2025 - 样式表
   Mobile-first Responsive Design
   ============================================ */

/* ============================================
   CSS Reset & Base Styles
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette */
    --primary-color: #e63946;
    --secondary-color: #f77f00;
    --dark-color: #1d3557;
    --light-color: #f1faee;
    --text-color: #2b2d42;
    --text-light: #6c757d;
    --border-color: #dee2e6;
    --bg-color: #ffffff;
    --bg-light: #f8f9fa;
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Breakpoints */
    --breakpoint-sm: 576px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 992px;
    --breakpoint-xl: 1200px;
    
    /* Transitions */
    --transition-base: 0.3s ease;
}

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--text-color);
    background-color: var(--bg-color);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-base);
}

a:hover {
    color: var(--primary-color);
}

ul, ol {
    list-style: none;
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

/* ============================================
   Container & Layout
   ============================================ */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }
}

/* ============================================
   Header & Navigation
   ============================================ */
.site-header {
    background-color: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
    gap: var(--spacing-xs);
}

@media (min-width: 768px) {
    .header-content {
        gap: var(--spacing-sm);
    }
}

.logo h1,
.logo .logo-text {
    font-size: 1rem;
    color: var(--primary-color);
    font-weight: 700;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

@media (min-width: 480px) {
    .logo h1,
    .logo .logo-text {
        font-size: 1.25rem;
    }
}

@media (min-width: 768px) {
    .logo h1,
    .logo .logo-text {
        font-size: 1.5rem;
    }
}

/* Search Bar */
.search-container {
    flex: 1;
    max-width: 500px;
    margin: 0 var(--spacing-sm);
}

@media (max-width: 767px) {
    .search-container {
        display: none;
    }
}

.search-form {
    display: flex;
    position: relative;
}

.search-input {
    flex: 1;
    padding: 0.625rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 0.875rem;
    width: 100%;
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.search-button {
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    padding: 0.5rem;
    background: transparent;
}

.search-icon {
    font-size: 1.125rem;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 0.5rem;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--text-color);
    transition: var(--transition-base);
}

@media (min-width: 768px) {
    .mobile-menu-toggle {
        display: none;
    }
}

/* Main Navigation */
.main-nav {
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-sm) 0;
}

.nav-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.nav-list a {
    color: var(--text-color);
    font-size: 0.9375rem;
    padding: 0.5rem 0;
    position: relative;
}

.nav-list a:hover,
.nav-list a.active {
    color: var(--primary-color);
}

.nav-list a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary-color);
}

@media (max-width: 767px) {
    .main-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--bg-color);
        border-bottom: 1px solid var(--border-color);
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        z-index: 999;
    }
    
    .main-nav.active {
        display: block;
    }
    
    .nav-list {
        flex-direction: column;
        gap: 0;
        padding: var(--spacing-sm) 0;
    }
    
    .nav-list li {
        width: 100%;
    }
    
    .nav-list a {
        display: block;
        padding: var(--spacing-sm) var(--spacing-md);
        border-bottom: 1px solid var(--border-color);
    }
    
    .nav-list a.active::after {
        display: none;
    }
    
    .nav-list a.active {
        background-color: var(--bg-light);
        font-weight: 600;
    }
}

/* ============================================
   Hero Banner
   ============================================ */
.hero-banner {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.hero-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    padding: 0 var(--spacing-sm);
}

.hero-subtitle {
    font-size: 0.9375rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
    padding: 0 var(--spacing-sm);
}

@media (min-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
}

@media (min-width: 768px) {
    .hero-title {
        font-size: 3rem;
        padding: 0;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
        padding: 0;
    }
}

/* Countdown Timer */
.countdown-container {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xs);
    margin: var(--spacing-lg) 0;
    flex-wrap: wrap;
}

.countdown-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    background-color: rgba(255, 255, 255, 0.2);
    padding: var(--spacing-xs);
    border-radius: 8px;
    min-width: 60px;
    flex: 1;
    max-width: 80px;
}

.countdown-number {
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1;
}

.countdown-label {
    font-size: 0.75rem;
    margin-top: var(--spacing-xs);
    opacity: 0.9;
}

@media (min-width: 480px) {
    .countdown-container {
        gap: var(--spacing-sm);
    }
    
    .countdown-item {
        min-width: 70px;
        padding: var(--spacing-sm);
        max-width: 90px;
    }
    
    .countdown-number {
        font-size: 2rem;
    }
    
    .countdown-label {
        font-size: 0.875rem;
    }
}

@media (min-width: 768px) {
    .countdown-container {
        gap: var(--spacing-md);
    }
    
    .countdown-item {
        min-width: 100px;
        padding: var(--spacing-md);
        max-width: none;
        flex: none;
    }
    
    .countdown-number {
        font-size: 3rem;
    }
}

.hero-description {
    font-size: 0.9375rem;
    opacity: 0.9;
    margin-top: var(--spacing-md);
}

/* ============================================
   Section Styles
   ============================================ */
.section {
    padding: var(--spacing-lg) 0;
}

@media (min-width: 768px) {
    .section {
        padding: var(--spacing-xl) 0;
    }
}

.section-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--dark-color);
    text-align: center;
    padding: 0 var(--spacing-sm);
}

@media (min-width: 480px) {
    .section-title {
        font-size: 1.75rem;
        padding: 0;
    }
}

@media (min-width: 768px) {
    .section-title {
        font-size: 2.25rem;
        text-align: left;
        margin-bottom: var(--spacing-lg);
    }
}

/* ============================================
   Articles Grid
   ============================================ */
.articles-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

@media (min-width: 576px) {
    .articles-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 992px) {
    .articles-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.article-card {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.article-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.article-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    background-color: var(--bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
}

.article-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-base);
}

.article-card:hover .article-image img {
    transform: scale(1.05);
}

.article-content {
    padding: var(--spacing-sm);
}

@media (min-width: 768px) {
    .article-content {
        padding: var(--spacing-md);
    }
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
    align-items: center;
}

.article-category {
    display: inline-block;
    font-size: 0.75rem;
    color: var(--primary-color);
    font-weight: 600;
    text-transform: uppercase;
}

.article-source {
    display: inline-block;
    font-size: 0.75rem;
    color: var(--text-light);
    font-weight: 500;
    padding: 0.25rem 0.5rem;
    background-color: var(--bg-light);
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

.article-source[data-source="windowscentral"] {
    background-color: #0078d4;
    color: white;
    border-color: #0078d4;
}

.article-source[data-source="androidauthority"] {
    background-color: #3ddc84;
    color: #1a1a1a;
    border-color: #3ddc84;
}

.article-source[data-source="tomsguide"] {
    background-color: #ff6b35;
    color: white;
    border-color: #ff6b35;
}

.article-source[data-source="techradar"] {
    background-color: #e63946;
    color: white;
    border-color: #e63946;
}

@media (max-width: 575px) {
    .article-meta {
        font-size: 0.7rem;
    }
    
    .article-source {
        font-size: 0.7rem;
        padding: 0.2rem 0.4rem;
    }
}

.article-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--dark-color);
    line-height: 1.4;
}

.article-excerpt {
    font-size: 0.9375rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-date {
    font-size: 0.875rem;
    color: var(--text-light);
}

/* ============================================
   Categories Grid
   ============================================ */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

@media (min-width: 576px) {
    .categories-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 768px) {
    .categories-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (min-width: 992px) {
    .categories-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.category-card {
    background-color: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: var(--spacing-md);
    text-align: center;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.category-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    background-color: var(--bg-color);
}

.category-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-xs);
}

.category-name {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--dark-color);
}

.category-count {
    font-size: 0.875rem;
    color: var(--text-light);
}

/* ============================================
   Top Deals Section
   ============================================ */
.deals-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

.deal-card {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.deal-card.featured {
    grid-template-columns: 1fr;
}

@media (min-width: 768px) {
    .deal-card {
        grid-template-columns: 300px 1fr;
    }
    
    .deal-card.featured {
        grid-template-columns: 600px 1fr;
    }
}

.deal-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    background-color: var(--bg-light);
}

.deal-card.featured .deal-image {
    height: 300px;
}

.deal-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.deal-content {
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
}

.deal-badge {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    font-size: 0.75rem;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    margin-bottom: var(--spacing-xs);
    align-self: flex-start;
}

.deal-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--dark-color);
}

.deal-excerpt {
    font-size: 0.9375rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
    flex: 1;
}

.deal-link {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.9375rem;
}

/* ============================================
   Newsletter Section
   ============================================ */
.newsletter {
    background-color: var(--bg-light);
    padding: var(--spacing-xl) 0;
}

.newsletter-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

@media (min-width: 480px) {
    .newsletter-content {
        padding: 0;
    }
}

.newsletter-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--dark-color);
    padding: 0 var(--spacing-sm);
}

@media (min-width: 480px) {
    .newsletter-title {
        font-size: 1.75rem;
        padding: 0;
    }
}

.newsletter-description {
    font-size: 1rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-lg);
}

.newsletter-form {
    margin-bottom: var(--spacing-sm);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

@media (min-width: 576px) {
    .form-group {
        flex-direction: row;
    }
}

.newsletter-input {
    flex: 1;
    padding: 0.875rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1rem;
}

.newsletter-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.newsletter-button {
    padding: 0.875rem 2rem;
    background-color: var(--primary-color);
    color: white;
    border-radius: 4px;
    font-weight: 600;
    transition: background-color var(--transition-base);
}

.newsletter-button:hover {
    background-color: #c1121f;
}

.newsletter-privacy {
    font-size: 0.875rem;
    color: var(--text-light);
}

/* ============================================
   Breadcrumbs
   ============================================ */
.breadcrumbs,
.breadcrumb {
    background-color: var(--bg-light);
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--border-color);
}

.breadcrumb ol {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
}

.breadcrumb li {
    font-size: 0.875rem;
    color: var(--text-light);
}

.breadcrumb li:not(:last-child)::after {
    content: '›';
    margin-left: var(--spacing-xs);
    color: var(--text-light);
}

.breadcrumb li a {
    color: var(--text-light);
    text-decoration: none;
    transition: color var(--transition-base);
}

.breadcrumb li a:hover {
    color: var(--primary-color);
}

.breadcrumb-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    align-items: center;
}

.breadcrumb-item {
    font-size: 0.875rem;
    color: var(--text-light);
}

.breadcrumb-item:not(:last-child)::after {
    content: '›';
    margin-left: var(--spacing-xs);
    color: var(--text-light);
}

.breadcrumb-item a {
    color: var(--text-light);
}

.breadcrumb-item a:hover {
    color: var(--primary-color);
}

.breadcrumb-item[aria-current="page"] span {
    color: var(--text-color);
    font-weight: 600;
}

/* ============================================
   Category Page
   ============================================ */
.category-banner {
    background-color: var(--bg-light);
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.category-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--dark-color);
}

.category-description {
    font-size: 1rem;
    color: var(--text-light);
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
}

/* Filters Section */
.filters-section {
    padding: var(--spacing-md) 0;
    background-color: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
}

.filters-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--dark-color);
}

.filter-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.filter-tag {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-size: 0.875rem;
    transition: all var(--transition-base);
}

.filter-tag:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.filter-tag.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Category Articles List */
.category-articles {
    padding: var(--spacing-xl) 0;
}

.articles-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

.article-item {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.article-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.article-item-link {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

@media (min-width: 768px) {
    .article-item-link {
        grid-template-columns: 300px 1fr;
    }
}

.article-item-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    background-color: var(--bg-light);
}

@media (min-width: 768px) {
    .article-item-image {
        height: 100%;
        min-height: 200px;
    }
}

.article-item-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.article-item-content {
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
}

.article-item-meta-top {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
    align-items: center;
}

.article-item-category {
    display: inline-block;
    font-size: 0.75rem;
    color: var(--primary-color);
    font-weight: 600;
    text-transform: uppercase;
}

.article-item-source {
    display: inline-block;
    font-size: 0.75rem;
    color: var(--text-light);
    font-weight: 500;
    padding: 0.25rem 0.5rem;
    background-color: var(--bg-light);
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

.article-item-source[data-source="windowscentral"] {
    background-color: #0078d4;
    color: white;
    border-color: #0078d4;
}

.article-item-source[data-source="androidauthority"] {
    background-color: #3ddc84;
    color: #1a1a1a;
    border-color: #3ddc84;
}

.article-item-source[data-source="tomsguide"] {
    background-color: #ff6b35;
    color: white;
    border-color: #ff6b35;
}

.article-item-source[data-source="techradar"] {
    background-color: #e63946;
    color: white;
    border-color: #e63946;
}

.article-item-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--dark-color);
    line-height: 1.4;
}

.article-item-excerpt {
    font-size: 0.9375rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
    flex: 1;
}

.article-item-meta {
    display: flex;
    gap: var(--spacing-md);
    font-size: 0.875rem;
    color: var(--text-light);
    margin-top: auto;
    flex-wrap: wrap;
}

.article-item-author {
    color: var(--text-color);
    font-weight: 500;
}

/* Pagination */
.pagination {
    margin-top: var(--spacing-xl);
    display: flex;
    justify-content: center;
}

.pagination-list {
    display: flex;
    gap: var(--spacing-xs);
    align-items: center;
}

.pagination-link {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-color);
    font-size: 0.9375rem;
    transition: all var(--transition-base);
}

.pagination-link:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.pagination-link.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.pagination-ellipsis {
    padding: 0.5rem;
    color: var(--text-light);
}

/* ============================================
   Article Page
   ============================================ */
.article-page {
    padding: var(--spacing-xl) 0;
}

.article-wrapper {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
}

@media (min-width: 992px) {
    .article-wrapper {
        grid-template-columns: 1fr 300px;
    }
}

.article-main {
    max-width: 800px;
}

.article-header {
    margin-bottom: var(--spacing-lg);
}

.article-category-badge {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    font-size: 0.75rem;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    font-weight: 600;
}

.article-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--dark-color);
    line-height: 1.3;
}

@media (min-width: 768px) {
    .article-title {
        font-size: 2.5rem;
    }
}

.article-meta {
    display: flex;
    gap: var(--spacing-md);
    font-size: 0.875rem;
    color: var(--text-light);
    margin-top: var(--spacing-sm);
}

.article-featured-image {
    width: 100%;
    margin-bottom: var(--spacing-lg);
    border-radius: 8px;
    overflow: hidden;
}

.article-featured-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* Article Meta Badges */
.article-meta-badges {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
}

.article-source-badge {
    display: inline-block;
    font-size: 0.75rem;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    text-transform: uppercase;
    font-weight: 600;
    color: white;
}

.article-source-badge[data-source="windowscentral"] {
    background-color: #0078d4;
}

.article-source-badge[data-source="androidauthority"] {
    background-color: #3ddc84;
    color: #1a1a1a;
}

.article-source-badge[data-source="tomsguide"] {
    background-color: #ff6b35;
}

.article-source-badge[data-source="techradar"] {
    background-color: #e63946;
}

/* Article Author Info */
.article-author-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.article-author {
    font-weight: 600;
    color: var(--text-color);
}

.article-source-name {
    color: var(--text-light);
    font-size: 0.875rem;
}

.article-date-info {
    margin-top: var(--spacing-xs);
}

/* Read Original Button */
.read-original-section {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 2px solid var(--border-color);
}

.btn-read-original {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    background-color: var(--primary-color);
    color: white;
    padding: 0.875rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: background-color var(--transition-base), transform var(--transition-base);
    box-shadow: 0 2px 8px rgba(230, 57, 70, 0.2);
}

.btn-read-original:hover {
    background-color: #c1121f;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(230, 57, 70, 0.3);
    color: white;
}

.btn-read-original span {
    font-size: 1.25rem;
}

/* Article Summary Section */
.article-summary-section {
    margin-bottom: var(--spacing-lg);
}

.article-intro {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-color);
    margin-bottom: var(--spacing-lg);
}

.read-full-note {
    background-color: var(--bg-light);
    border-left: 4px solid var(--primary-color);
    padding: var(--spacing-md);
    border-radius: 4px;
    margin-top: var(--spacing-lg);
}

.read-full-note p {
    margin: 0;
    color: var(--text-color);
    line-height: 1.6;
}

@media (max-width: 767px) {
    .article-title {
        font-size: 1.5rem;
    }
    
    .btn-read-original {
        width: 100%;
        justify-content: center;
        padding: 0.75rem 1.25rem;
        font-size: 0.9375rem;
    }
    
    .article-meta-badges {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* Table of Contents */
.table-of-contents {
    background-color: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.toc-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--dark-color);
}

.toc-list {
    list-style: decimal;
    margin-left: var(--spacing-md);
}

.toc-list li {
    margin-bottom: var(--spacing-xs);
}

.toc-list a {
    color: var(--text-color);
    font-size: 0.9375rem;
}

.toc-list a:hover {
    color: var(--primary-color);
}

/* Article Body */
.article-body {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--text-color);
}

.article-intro {
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--dark-color);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.article-section {
    margin-bottom: var(--spacing-xl);
}

.article-section h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    margin-top: var(--spacing-xl);
    color: var(--dark-color);
    line-height: 1.3;
}

.article-section h3 {
    font-size: 1.375rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    margin-top: var(--spacing-lg);
    color: var(--dark-color);
    line-height: 1.4;
}

.article-section p {
    margin-bottom: var(--spacing-md);
}

.article-section ul,
.article-section ol {
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    list-style: disc;
}

.article-section li {
    margin-bottom: var(--spacing-xs);
}

/* Key Takeaway Box */
.key-takeaway-box {
    background-color: var(--bg-light);
    border-left: 4px solid var(--primary-color);
    padding: var(--spacing-md);
    margin: var(--spacing-xl) 0;
    border-radius: 4px;
}

.takeaway-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--dark-color);
}

.takeaway-list {
    list-style: disc;
    margin-left: var(--spacing-md);
}

.takeaway-list li {
    margin-bottom: var(--spacing-xs);
    font-size: 0.9375rem;
}

/* CTA Section */
.article-cta {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: var(--spacing-xl);
    border-radius: 8px;
    margin: var(--spacing-xl) 0;
    text-align: center;
}

.cta-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.cta-description {
    font-size: 1rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
}

.cta-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: center;
}

.cta-button {
    padding: 0.875rem 1.5rem;
    background-color: white;
    color: var(--primary-color);
    border-radius: 4px;
    font-weight: 600;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    color: var(--primary-color);
}

/* Social Share */
.social-share {
    margin: var(--spacing-xl) 0;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.share-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--dark-color);
}

.share-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.share-button {
    padding: 0.625rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 0.875rem;
    color: var(--text-color);
    transition: all var(--transition-base);
}

.share-button:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.share-facebook:hover {
    background-color: #1877f2;
    color: white;
    border-color: #1877f2;
}

.share-twitter:hover {
    background-color: #1da1f2;
    color: white;
    border-color: #1da1f2;
}

.share-weibo:hover {
    background-color: #e6162d;
    color: white;
    border-color: #e6162d;
}

.share-wechat:hover {
    background-color: #07c160;
    color: white;
    border-color: #07c160;
}

/* Article Sidebar */
.article-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.sidebar-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--dark-color);
}

/* Related Articles */
.related-articles-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.related-article {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.related-article:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.related-article-image {
    width: 100%;
    height: 120px;
    overflow: hidden;
    background-color: var(--bg-light);
}

.related-article-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.related-article-title {
    font-size: 0.9375rem;
    font-weight: 600;
    padding: var(--spacing-sm);
    color: var(--dark-color);
    line-height: 1.4;
}

/* Sidebar Newsletter */
.sidebar-newsletter {
    background-color: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: var(--spacing-md);
}

.sidebar-newsletter p {
    font-size: 0.9375rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
}

.sidebar-newsletter-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.sidebar-newsletter-input {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 0.9375rem;
}

.sidebar-newsletter-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.sidebar-newsletter-button {
    padding: 0.75rem;
    background-color: var(--primary-color);
    color: white;
    border-radius: 4px;
    font-weight: 600;
    transition: background-color var(--transition-base);
}

.sidebar-newsletter-button:hover {
    background-color: #c1121f;
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
    background-color: var(--dark-color);
    color: white;
    padding: var(--spacing-xl) 0 var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

@media (min-width: 576px) {
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 992px) {
    .footer-content {
        grid-template-columns: 2fr 1fr 1fr;
        gap: var(--spacing-xl);
    }
}

.footer-section h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.footer-section p {
    font-size: 0.9375rem;
    line-height: 1.6;
    opacity: 0.9;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer-links a {
    font-size: 0.9375rem;
    color: white;
    opacity: 0.9;
    transition: opacity var(--transition-base);
}

.footer-links a:hover {
    opacity: 1;
    color: var(--primary-color);
}

.social-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.social-links a {
    font-size: 0.9375rem;
    color: white;
    opacity: 0.9;
    transition: opacity var(--transition-base);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.social-links a:hover {
    opacity: 1;
    color: var(--primary-color);
}

.social-link {
    font-size: 0.9375rem;
    color: white;
    opacity: 0.9;
    transition: opacity var(--transition-base);
}

.social-link:hover {
    opacity: 1;
    color: var(--primary-color);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-md);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.875rem;
    opacity: 0.8;
    margin-bottom: var(--spacing-xs);
}

.affiliate-notice {
    font-size: 0.8125rem;
    opacity: 0.7;
    margin-top: var(--spacing-sm);
    line-height: 1.6;
}

/* ============================================
   Live Deals RSS Feed Section
   ============================================ */
.live-deals {
    background-color: var(--bg-light);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-subtitle {
    font-size: 1rem;
    color: var(--text-light);
    margin-top: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
}

.rss-source {
    font-size: 0.875rem;
    color: var(--text-light);
    margin-top: var(--spacing-sm);
}

.rss-source a {
    color: var(--primary-color);
    text-decoration: none;
}

.rss-source a:hover {
    text-decoration: underline;
}

.rss-loading {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-light);
    font-size: 1rem;
}

.rss-error {
    text-align: center;
    color: var(--primary-color);
    padding: var(--spacing-md);
    background-color: rgba(230, 57, 70, 0.1);
    border: 1px solid rgba(230, 57, 70, 0.3);
    border-radius: 8px;
    margin-bottom: var(--spacing-lg);
}

.rss-feed-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

@media (min-width: 576px) {
    .rss-feed-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 992px) {
    .rss-feed-container {
        grid-template-columns: repeat(3, 1fr);
    }
}

.rss-card {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    height: 100%;
}

.rss-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.rss-card-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin: 0 0 var(--spacing-sm) 0;
    color: var(--dark-color);
    line-height: 1.4;
}

.rss-card-title a {
    color: var(--dark-color);
    text-decoration: none;
    transition: color var(--transition-base);
}

.rss-card-title a:hover {
    color: var(--primary-color);
}

.rss-card-date {
    font-size: 0.875rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
}

.rss-card-description {
    font-size: 0.9375rem;
    color: var(--text-color);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
    flex: 1;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
}

@media (max-width: 575px) {
    .rss-card-description {
        -webkit-line-clamp: 3;
    }
    
    .rss-card {
        padding: var(--spacing-sm);
    }
    
    .rss-card-title {
        font-size: 1rem;
    }
}

.rss-card-description img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: var(--spacing-xs) 0;
    border-radius: 4px;
}

.rss-card-link {
    margin-top: auto;
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    padding: 0.625rem 1rem;
    text-decoration: none;
    border-radius: 4px;
    text-align: center;
    font-weight: 600;
    font-size: 0.9375rem;
    transition: background-color var(--transition-base);
    align-self: flex-start;
}

.rss-card-link:hover {
    background-color: #c1121f;
    color: white;
}

/* ============================================
   Loading & Error Messages
   ============================================ */
.loading-message, .error-message {
    text-align: center;
    padding: var(--spacing-lg);
    font-size: 1.125rem;
    color: var(--text-color);
}

.error-message {
    color: var(--primary-color);
    background-color: #ffebee;
    border: 1px solid #ef9a9a;
    border-radius: 8px;
    margin: var(--spacing-md) 0;
}

.loading-message p {
    margin: 0;
    color: var(--text-light);
}

/* ============================================
   Utility Classes
   ============================================ */
.text-center {
    text-align: center;
}

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }

/* ============================================
   Legal Pages (Privacy, Terms, Contact)
   ============================================ */
.page-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    text-align: center;
}

.page-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.page-subtitle {
    font-size: 1rem;
    opacity: 0.9;
}

@media (min-width: 768px) {
    .page-header {
        padding: 4rem 0 3rem;
    }
    
    .page-title {
        font-size: 2.5rem;
    }
}

.legal-content {
    padding: var(--spacing-xl) 0;
}

.content-wrapper {
    max-width: 800px;
    margin: 0 auto;
}

.legal-section {
    margin-bottom: var(--spacing-xl);
}

.legal-section h2 {
    color: var(--dark-color);
    font-size: 1.75rem;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-xs);
    border-bottom: 3px solid var(--primary-color);
}

.legal-section h3 {
    color: var(--text-color);
    font-size: 1.25rem;
    margin: var(--spacing-md) 0 var(--spacing-sm);
}

.legal-section p {
    margin-bottom: var(--spacing-sm);
    line-height: 1.8;
}

.legal-section ul {
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.legal-section li {
    margin-bottom: var(--spacing-xs);
    line-height: 1.8;
}

/* ============================================
   Contact Page
   ============================================ */
.contact-content {
    padding: var(--spacing-xl) 0;
}

.contact-wrapper {
    display: grid;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

@media (min-width: 992px) {
    .contact-wrapper {
        grid-template-columns: 1fr 1.5fr;
    }
}

.contact-info {
    display: grid;
    gap: var(--spacing-md);
}

.contact-info-card {
    background-color: var(--bg-light);
    padding: var(--spacing-md);
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
}

.contact-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.contact-info-card h3 {
    color: var(--dark-color);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.contact-info-card p {
    margin-bottom: var(--spacing-xs);
    color: var(--text-color);
}

.contact-note {
    color: var(--text-light);
    font-size: 0.875rem;
    font-style: italic;
}

.contact-form-wrapper h2 {
    color: var(--dark-color);
    font-size: 1.75rem;
    margin-bottom: var(--spacing-sm);
}

.contact-form-wrapper > p {
    color: var(--text-light);
    margin-bottom: var(--spacing-lg);
}

.contact-form {
    background-color: var(--bg-light);
    padding: var(--spacing-lg);
    border-radius: 8px;
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--text-color);
    font-weight: 600;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: var(--font-family);
    font-size: 1rem;
    transition: border-color var(--transition-base);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.btn-submit {
    background-color: var(--primary-color);
    color: white;
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color var(--transition-base);
    width: 100%;
}

.btn-submit:hover {
    background-color: #c1121f;
}

@media (min-width: 576px) {
    .btn-submit {
        width: auto;
    }
}

.form-message {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm);
    border-radius: 4px;
    text-align: center;
}

.form-message.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.form-message.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.contact-faq {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 2px solid var(--border-color);
}

.contact-faq h2 {
    color: var(--dark-color);
    font-size: 1.75rem;
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.faq-grid {
    display: grid;
    gap: var(--spacing-md);
}

@media (min-width: 768px) {
    .faq-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.faq-item {
    background-color: var(--bg-light);
    padding: var(--spacing-md);
    border-radius: 8px;
    border-left: 4px solid var(--secondary-color);
}

.faq-item h3 {
    color: var(--dark-color);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
}

.faq-item p {
    color: var(--text-color);
    line-height: 1.6;
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    .site-header,
    .site-footer,
    .breadcrumbs,
    .article-sidebar,
    .social-share,
    .article-cta {
        display: none;
    }
    
    .article-body {
        font-size: 12pt;
    }
}